eISSN: 2299-0046
ISSN: 1642-395X
Advances in Dermatology and Allergology/Postępy Dermatologii i Alergologii
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SCImago Journal & Country Rank
4/2021
vol. 38
 
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abstract:
Original paper

Double-blind, randomized controlled trial comparing the use of microneedling alone vs chemical peeling alone vs a combination of microneedling and chemical peeling in the treatment of atrophic post-acne scars. An assessment of clinical effectiveness and patients’ quality-of-life

Agata Pakla-Misiur
1
,
Marcelina Grochowiec
1
,
Aleksandra Lesiak
2
,
Igor A. Bednarski
2

1.
Department of Dermatology and Venereology, Specialist Hospital, Jasło, Poland
2.
Department of Dermatology, Paediatric and Oncologic Dermatology, Medical University of Lodz, Lodz, Poland
Adv Dermatol Allergol 2021; XXXVIII (4): 629–635
Online publish date: 2021/09/17
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Introduction
Acne vulgaris is a common, chronic disease. One of the most commonly encountered complications of acne is permanent atrophic scarring. Treatment of atrophic scars includes fillers, dermabrasion, laser resurfacing, microneedling and peelings and it is often difficult to treat. In our double-blind randomized controlled trial (RCT), we investigated the synergistic effect of microneedling with the application of trichloroacetic acid, kojic acid and hydrogen peroxide in the treatment of atrophic acne scars. Aim: To assess the clinical effectiveness and patients’ quality-of-life (HRQoL) after three types of atrophic post-acne scar treatment, namely microneedling alone (MN) vs chemical peeling alone (CP) vs. a combination of microneedling and chemical peeling (MN + CP).

Material and methods
A total of 120 patients were enrolled into the study following strict inclusion/exclusion criteria and randomized into the three treatment groups – MN, CP (a combination of trichloroacetic acid, kojic acid and hydrogen peroxide), and MN + CP. According to a preapproved protocol, each patient underwent four treatment sessions, each spread 20 days apart. Both pre- and post-treatment clinical status (using the Goodman-Baron scale; two expert raters blinded to the treatment used) and patients’ HRQoL (using the Dermatology Life Quality Index) were assessed.

Results
During the 5-month recruitment period, a total of 120 patients were approached and agreed to take part in the study (94 females – 78.3% and 26 males) (mean age of 30.14 ±3.64 years; range: 18–45 years). Only in the MN + CP group there was a statistically significant improvement according to the G-B scale post-treatment (2.87 ±0.83 vs. 2.03 ±1.16 respectively; p = 0.0005). Patients in all three treatment groups experienced a statistically significant improvement in their HRQoL post-treatment (all p’s < 0.05).

Conclusions
A combination of microneedling and chemical peeling produces the best, objectively measured effects in the treatment of atrophic post-acne scars. All examined treatments, even if not producing a clinically significant treatment outcome, improve patients’ HRQoL.

keywords:

acne, microneedling, PRX-T33, scar, quality of life

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